Interplanetary shock waves and magnetospheric substorms

Details Interplanetary shock waves and magnetospheric substorms Interplanetary shock waves and magnetospheric substorms

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..381a&link_type=abstract

Planetary and Space Science, vol. 28, Apr. 1980, p. 381-385.

Computer Science

16

Interplanetary Magnetic Fields, Magnetic Storms, Magnetospheric Instability, Shock Wave Propagation, Solar Activity Effects, Sudden Storm Commencements, Dynamo Theory, Solar Terrestrial Interactions, Solar Wind Velocity

Scientific paper

It is shown that substorm activity after a storm sudden commencement (SSC) depends on whether or not an interplanetary shock wave is accompanied by a large increase of the solar wind-magnetosphere energy coupling function. It has long been thought that substorm activity associated with an SSC results from sudden conversion of magnetic energy stored in the magnetotail, and that this conversion is triggered by the shock wave. However, the present result implies that the magnetospheric substorm is not a sudden conversion of stored magnetic energy, but is a direct consequence of increased efficiency of the solar wind-magnetosphere dynamo.

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